Classification: Confidential
Hi all,
I'm quite new on OVS and I'm using it for testing some possible configuration
in an internal project.
I started to use OVS 2.12 and all test were ok but once I moved to release
2.15 I've noticed some different behaviour that make fail my tests.
Mainly this is due to "ovs-appctl upcall/disable-megaflows" configuration that
I use on my set up.
When I use disable megaflow I'm not able to offload traffic on TC due to some
error on check mask that are not all zero. Let me give you more details :
In file "netdev-offload-tc.c" has been introduced a check
"test_key_and_mask" that doesn't pass because some mask are not zero (i.g
mask->dp_hash):
if (mask->dp_hash) {
VLOG_DBG_RL(&rl, "offloading attribute dp_hash isn't supported");
return EOPNOTSUPP;
}
I've tried to skip this check and I've find another similar issue related to
mask check on "tc.c" file under the function "nl_msg_put_flower_tunnel" where
I've added this work around in order to offload tc flows:
"if ((ipv4_src || ipv4_dst) && (ipv4_dst_mask || ipv4_src_mask)) {"
Adding these patches I'm able to offload TC with disable-megaflow option as I
was with ovs 2.12.
Of course same tests with no disable-megaflow are working properly.
So I'm wondering if this is an expected behaviour on 2.15 release where a lot
of checks on mask have been added and if
disable-megaflows option is still supported . Is this a known behaviour?
Thank you in advance for your support or comments.
Regards.
/Massimo
Info:
ovs-vswitchd -version:
ovs-vswitchd (Open vSwitch) 2.15.1
git rev-parse HEAD:
commit 934668c295e0b4ecbb4ec3358e1acf4e5824ea65 (origin/branch-2.15)
OS:
RHEL8.4
Kernel:
4.18.0-305.el8.x86_64
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